Charles Moore wrote a great article about the unibody 13″ MacBook compared to the much-loved 12″ PowerBook. A friend of Charles argued that until the dimensions were nearly identical it could never be considered a replacement. Charles feels there’s a little more to it than that.

I think they’re both right (yes, life is good sitting on top of this fence).

I don’t disagree with Charles’ friend that width is a big factor, and here the new MacBook is much bigger than the 12.” However, I would suggest that depth is the more critical (for use on a table, airline tray table, etc.) and here the new model is only slightly bigger. Further, weight is a big factor and the two are pretty much identical.

So you need to consider just what you’re getting for those extra couple inches of width…

Read the rest of this article on theAppleBlog >>